JPS60149227A - Shf receiver - Google Patents

Shf receiver

Info

Publication number
JPS60149227A
JPS60149227A JP59005391A JP539184A JPS60149227A JP S60149227 A JPS60149227 A JP S60149227A JP 59005391 A JP59005391 A JP 59005391A JP 539184 A JP539184 A JP 539184A JP S60149227 A JPS60149227 A JP S60149227A
Authority
JP
Japan
Prior art keywords
supplied
voltage
outdoor unit
signal
outdoor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP59005391A
Other languages
Japanese (ja)
Inventor
Koji Ouchi
大内　弘二
Shinobu Tsurumaru
鶴丸　忍
Tadashi Kajiwara
梶原　正
Kenichiro Kumamoto
熊本　研一郎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11609858&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JPS60149227(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sony Corp filed Critical Sony Corp
Priority to JP59005391A priority Critical patent/JPS60149227A/en
Priority to KR1019840008609A priority patent/KR920006133B1/en
Priority to CA000471289A priority patent/CA1224529A/en
Priority to US06/688,544 priority patent/US4592093A/en
Priority to AU37538/85A priority patent/AU585205B2/en
Priority to EP85300176A priority patent/EP0149533B2/en
Priority to DE8585300176T priority patent/DE3579468D1/en
Publication of JPS60149227A publication Critical patent/JPS60149227A/en
Priority to HK73694A priority patent/HK73694A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade

Abstract

PURPOSE:To avoid the increment of indoor/outdoor cables by switching the voltage supplied to an outdoor device from an indoor device in response to the receiving band, detecting the voltage change by the outdoor device and producing a local transmission signal of a frequency corresponding to the output of said voltage detection. CONSTITUTION:When a low power broadcast, e.g., 11.7-12.2GHz is received, the voltage +B which is supplied to a terminal 12 of an outdoor device 2 from an indoor device 4 via a coaxial cable 3 is set at +10V, for example. Then the working voltage is supplied to a local oscillator 9L under control of a level detecting circuit 15. While a frequency signal of 10.705GHz is supplied to a mixer 8. Thus the device 2 is set under a reception state for a low power broadcast. For reception of a high power broadcast, e.g., 12.2-12.76GHz, the voltage +B is set at 15V, for example and the working voltage is supplied to a local oscillator 9H under the control of the circuit 15. Thus the device 2 is put under a reception state for a high power broadcast. In this case, just a single piece of cable 3 is needed between both devices 2 and 4.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、例えば放送衛星からのＳ　ＨＦ放送（Ｈ号を
受信するＳＨＦ受信機に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an SHF receiver that receives SHF broadcasts (H signal) from, for example, a broadcasting satellite.

背景技術とその問題点 放送衛星からのＳＨＦ放送信号を受信するＳ　ＨＦ受信
機は、例えば第１図にボずように、アンテナ（１１と共
に屋外に備え付けられアンテナ（１１で捕えられたＳ　
ＨＦ帯の電波をＵ　ＨＦ帯に周波数変換し増幅する屋外
ユニット（２）と、屋内に備え付けられ、屋外ユニット
（２）より同軸ケーブル（３）を介してＵ　ＨＩ？帯に
変換された信号が供給され、これよりテレビジョン受像
機（５）に供給する映像信号と音声信号を取り出す屋内
ユニット（４）とで構成される。Background Art and Its Problems An SHF receiver that receives SHF broadcast signals from a broadcasting satellite is installed outdoors together with an antenna (11) and receives SHF signals captured by the antenna (11), as shown in Fig. 1, for example.
There is an outdoor unit (2) that frequency converts and amplifies radio waves in the HF band to the UHF band, and is installed indoors, and the UHI? It is comprised of an indoor unit (4) which is supplied with a signal converted into a video signal and extracts a video signal and an audio signal from which the signal is supplied to a television receiver (5).

ところで、Ｓ　ＨＦ放送には、１９１１えばローパワー
放送（受イｄ周波数１１．７〜１２．２Ｇｌｌｚ　）　
、ハイパワー放送（受信周波数１２．２〜１２．７ＧＩ
Ｉｚ　）が考えられている。By the way, SHF broadcasting includes low power broadcasting (reception frequency 11.7~12.2Gllz) in 1911.
, high power broadcasting (reception frequency 12.2~12.7GI
Iz) is considered.

しかしながら、上述したＳ　ＨＦ受信機は、屋外ユニッ
ト（２）における局部発振周波数の切換えをしないとす
れば、周波数的に５（ｌＯＭＩＩｚｌ、か帯域をとるこ
とができない。従って、上述した帯域を異にする２つの
放送を受１ばするためにば屋外ユニット（２）における
局部発振周波数の切換えが必要となる。However, the above-mentioned SHF receiver cannot have a frequency band of 5 (lOMIIzl) unless the local oscillation frequency is switched in the outdoor unit (2). In order to receive two broadcasts simultaneously, it is necessary to switch the local oscillation frequency in the outdoor unit (2).

この切換のためには、例えば同軸ケーブル（３）の他に
屋内ユニット（４）から屋外ユニット（２）に局部発振
周波数制御用のケーブルを別個に設け、これを通じて制
御することが考えられる。しかし、複数本のケーブルを
屋外ユニット（２）と屋内ユニット（４）との間に設け
ることはイｉ号伝送−ヒから好ましくなく、また屋外ユ
ニット（２）の端子が増すこととなり、例えば雨水の漏
洩防止のための気密上からも好ましくない。For this switching, for example, in addition to the coaxial cable (3), it is conceivable to provide a separate cable for local oscillation frequency control from the indoor unit (4) to the outdoor unit (2), and to perform control through this cable. However, it is not preferable to install multiple cables between the outdoor unit (2) and the indoor unit (4) because of the transmission problem (I), and it also increases the number of terminals on the outdoor unit (2). It is also unfavorable from the viewpoint of airtightness to prevent leakage.

発明の目的 本発明は斯る烈に鑑み、屋外ユニットと屋内ユニット間
のケーブルを増加させずに、屋外ユニットにおける局部
発振周波数の受信帯域に応じた切換えを良好に行ない得
るようにしたものである。Purpose of the Invention In view of these concerns, the present invention is capable of effectively switching the local oscillation frequency in an outdoor unit according to the reception band without increasing the number of cables between the outdoor unit and the indoor unit. .

発明の概要 本発明は上記目的を達成するため、屋内ユニットより同
軸ケーブルを通じて屋外ユニットに供給される電化が受
信帯域に応じて切換えられると共に屋外ユニットでこの
電圧変化が検出され、その検出出力で屋外ユニットにお
ける局部発振信号の周波数が受信帯域に応じたものに切
換えられるようにしたものである。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention switches the electricity supplied from the indoor unit to the outdoor unit via a coaxial cable according to the reception band, detects this voltage change in the outdoor unit, and uses the detected output to connect the outdoor unit to the outdoor unit. The frequency of the local oscillation signal in the unit can be switched according to the reception band.

従って、屋外ユニットと屋内ユニット間のケーブルを増
加させずに屋外ユニットにおける局部発振周波数を受信
帯域に応じて切換えることができる。Therefore, the local oscillation frequency in the outdoor unit can be switched according to the reception band without increasing the number of cables between the outdoor unit and the indoor unit.

実施例 以下、第２図を参照しながら本発明の一実施例につい°
ζ説明しよう。この第２図において第１１１と対応する
部分には同一符号を付して示す。EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIG.
Let me explain. In FIG. 2, parts corresponding to 111 are designated by the same reference numerals.

同図において、アンテナ＋１１で捕えられたＳ　ＨＦ放
送信号５ｓｎｐは屋外ユニット（２）を構成する円偏波
直線偏波変換器（６）で円偏波から直線偏波に変換され
、ざらに高周波増幅器（７）を介されてミキサ（８）に
供給される。In the figure, the SHF broadcast signal 5snp captured by antenna +11 is converted from circularly polarized wave to linearly polarized wave by the circularly polarized wave linear polarized wave converter (6) that constitutes the outdoor unit (2), and is roughly converted into a high frequency wave. The signal is supplied to a mixer (8) via an amplifier (7).

また、（９Ｌ）及び（９１１）は夫々局部発振器であり
、夫々例えば１０．７０５ＧＩＩｚ　（ｒ＋−バ”）　
−１ｊｌ送受信用）及び１１．２ＧＩｌｚ　（ハイパワ
ー放送受信用）の周波数信号を発生ずるものであり、夫
々より出力される周波数信号はミキサ（８１に（Ｊ（給
される。そして、このミキサ（８）からはＵ　ＨＦ帯に
周波数変換されたｆば号５ｕＨＦが得られ、これが中間
周波増幅器０〔及び直流１ｑロト川のコンデンサ（１１
）を介し′ζ出力端子（１２）に供給される。Further, (9L) and (911) are local oscillators, respectively, and each has, for example, 10.705GIIz (r+-bar")
-1jl (for transmission and reception) and 11.2GIlz (for high-power broadcast reception), and the frequency signals output from each are fed to a mixer (81).Then, this mixer ( 8), a frequency-converted frequency of 5uHF to the UHF band is obtained, which is then connected to the intermediate frequency amplifier 0 [and the DC 1q Rotokawa capacitor (11
) is supplied to the 'ζ output terminal (12).

また、（１３）はレギュレータであり、屋内ユニット（
４）より同軸ケーブル（３）を介して端子（１２）にイ
ノ（給される電圧子Ｂが供給されて安定化される。In addition, (13) is a regulator, which is an indoor unit (
4) Voltage element B is supplied to the terminal (12) via the coaxial cable (3) and stabilized.

曹蚕述するように端子（１２）に供給される電圧子Ｂは
、ローパワー放送（１１，７〜１２．２にｌｌｚ　）を
受信するとき及びハイパワー放送（１２，２〜１２．７
Ｇｌｌｚ　）を受信するとき、夫々例えば＋ＩＯＶ及び
＋１５Ｖとされる。レギュレータ（１３）で所定電圧に
安定化された電圧は高周波増幅器（７）、中間周波増幅
器ＯＩに供給されると共に、スイッチ回ｖＲ（１４）を
介して発振器（９Ｌ）及び（９１１）に供給される。As described by Cao Chi, the voltage element B supplied to the terminal (12) is used when receiving low power broadcasting (llz from 11,7 to 12.2) and when receiving high power broadcasting (llz from 12,2 to 12.7).
Gllz) are received, for example, at +IOV and +15V, respectively. The voltage stabilized to a predetermined voltage by the regulator (13) is supplied to the high frequency amplifier (7) and the intermediate frequency amplifier OI, and is also supplied to the oscillators (9L) and (911) via the switch circuit vR (14). Ru.

また、（１５）はレベル検出回路であり、端子（１２）
に供給される電圧子Ｂが供給され、そのレベＪしが＋Ｉ
ＯＶであるか、あるいは＋１５Ｖであるかが検出される
。そして、その検出信号Ｓｄはスイッチ回路（１４）に
切換制御信号として供給される。In addition, (15) is a level detection circuit, and the terminal (12)
Voltage element B is supplied, and its level J is +I
It is detected whether it is OV or +15V. The detection signal Sd is then supplied to the switch circuit (14) as a switching control signal.

スイッチ回１洛（１４）は、電［に十Ｂが＋ＩＯＶであ
るとき、即ちローパワー放送（１１，７〜１２．２Ｇｉ
ｌｚ　）を受信するたきは発振器（９Ｌ）側に切換えら
れると共に、電圧子Ｂが＋１５Ｖであるとき、即ちハイ
パワー放送（１２，２〜１２．７ＣＩＩ２　）を受信す
るときは発振器（９＋１）側に切換えられる。Switching time 1 (14) is when electric power is +IOV, that is, low power broadcasting (11.7~12.2 Gi
1z) is switched to the oscillator (9L) side, and when voltage element B is +15V, that is, when receiving high power broadcasting (12.2 to 12.7CII2), the switch is switched to the oscillator (9+1) side. Can be switched.

従って、ローパワー放送を受信するときは、レギュレー
タ（１３）より発振器（９Ｌ）に動作電圧が供給され、
この発振器（ＯＬ）’より１０．７０５ＧＨｚの周波数
信号がミキサ（８）に供給され、ローパワー放送の受信
状態とされる。一方、ハイパワー放送を受信するときは
、レギュレータ（１３）より発振器（９１１）に動作電
圧が供給され、この発振器（９１１）より１１　、２Ｇ
ｌｌｚの周波数信号がミキサ（８）に供給され、ハイパ
ワー放送の受信状態とされる。Therefore, when receiving low power broadcasting, the operating voltage is supplied from the regulator (13) to the oscillator (9L),
A frequency signal of 10.705 GHz is supplied from this oscillator (OL)' to the mixer (8), and the mixer (8) is brought into a low power broadcast reception state. On the other hand, when receiving high power broadcasting, the regulator (13) supplies the operating voltage to the oscillator (911), and this oscillator (911)
A frequency signal of llz is supplied to the mixer (8), and the mixer (8) is set to receive high power broadcasting.

また、屋外ユニット（２）の端子（１２）に（ハ給され
るＵ　ＨＦ帯に周波数変換された信号３１１）ＩＦは、
同軸ケーブル（３）、入力端子（１６）及び直流１１１
止川のコンデンサ（１７）を介して屋内ユニット（４）
を構成するチューナ（１８）に（」（給される。In addition, the IF (signal 311 frequency-converted to the U HF band supplied to the terminal (12) of the outdoor unit (2)) is
Coaxial cable (3), input terminal (16) and DC 111
Indoor unit (4) via Togawa capacitor (17)
('') is supplied to the tuner (18) that constitutes the tuner (18).

このチューナ（１８）においてチャンネルセレク夕（１
９）の制御により所定チャンネルの放送が選択され、そ
の出力側には選択された放送の中間周波数信号（ＦＭ信
号）Ｓ■ｐが得られる。このイば号ＳＴＦはＡＧＣ増幅
器（２０）　、バンドパスフィルタ（２Ｉ）及びリミッ
タ（２２）の直列回路を介してＦ　Ｍ検波器（２３）に
供給される。この検波器（２３）からは、例えば第３図
に示すように輝度信号Ｙ、色信号Ｃよりなるビデオ信号
Ｓνと４相位相変調（４ＰＳＫ　）された音声信号Ｓ八
′との合成信号が得られ、ビデオアンプ（２４）及び音
声プロセッサ（２５）に供給される。In this tuner (18), select channel select (1).
9), the broadcast of a predetermined channel is selected, and the intermediate frequency signal (FM signal) Sp of the selected broadcast is obtained on the output side. This signal STF is supplied to an FM detector (23) via a series circuit of an AGC amplifier (20), a bandpass filter (2I), and a limiter (22). From this detector (23), for example, as shown in FIG. 3, a composite signal of a video signal Sν consisting of a luminance signal Y and a chrominance signal C and a four-phase phase keyed (4PSK) audio signal S8' is obtained. and is supplied to a video amplifier (24) and an audio processor (25).

そして、ビデオアンプ（２４）からはビデオ信号Ｓｖが
増幅されて得られると共に音声プロセッサ（２５）から
は音声信号ＳＡが得られる。A video signal Sv is amplified and obtained from the video amplifier (24), and an audio signal SA is obtained from the audio processor (25).

また、ビデオアンプ（２４）からのビデオ信号Ｓｖ及び
音声ブｔｌセソザ（２５）からの癌声イ、４号ＳＡはＲ
Ｆコンバータ（２６）にイ共給され、この二！ンハータ
（２６）より例えば空チャンネルに合せたテレビ信号Ｓ
ｐＦが得られる。In addition, the video signal Sv from the video amplifier (24), the cancer voice I from the audio button sesoza (25), and the No. 4 SA are R
It is co-supplied to the F converter (26), and this two! For example, a TV signal S tuned to a sky channel from Nhata (26)
pF is obtained.

また、バー内ユニソＩ−ｆ４＋におい゛（、（２７）は
電源回路をボし、屋内ユニット（４）の各部に必要とす
る電圧が供給されると共にレギュレータ（２１０に所定
電圧が供給される。このレギュレータ（２８）には、ロ
ーパワー放送を受信するとき及びハイパワー放送を受信
するときで、夫々異なる基準電圧ＶＲＬ及びＶＲＨがス
イッチ回路（２９）を介し゛ζ供給される。そして、こ
のレギュレータ（２８）の出力側にはローパワー放送の
ときには、例えば＋１０Ｖ、ハイパワー放送のときには
、例えば＋１５Ｖの電圧子Ｂが得られる。この電圧子Ｂ
は交流阻１０１１の二１イル（３０）　、端子（１６）
及び同軸ケーブル（３）を介して上述したように屋外ユ
ニット（２）の端子（１２）に供給される。Further, in the in-bar Uniso I-f4+, the power supply circuit (27) is used to supply the necessary voltage to each part of the indoor unit (4), and a predetermined voltage is supplied to the regulator (210). Different reference voltages VRL and VRH are supplied to this regulator (28) via a switch circuit (29) when receiving low power broadcasting and when receiving high power broadcasting. On the output side of (28), a voltage element B of, for example, +10V is obtained during low-power broadcasting, and a voltage of +15V, for example, is obtained during high-power broadcasting.This voltage element B
is AC block 1011, 21 Ile (30), terminal (16)
and via a coaxial cable (3) to the terminal (12) of the outdoor unit (2) as described above.

本例はこのように構成され、ローパワー放送（１１，７
〜１２．２ｉ；ｌｌｚ　）を受信するとき、屋内ユニッ
１−　＋４１より同軸ケーブル（３）を介してハ４ｆｌ
ユニット（２）の端子（１２）に供給される電圧子Ｂは
、例えば＋１０■とされ、レベル検出回ＩＭ（１５）の
制御により局部発振器（９Ｌ）に動作電圧が供給され、
ミキ！Ｉ’　（８１にはＩＯ，７０５ＧＩｌｚの周波数
信号がイバ給され、屋外ユニ７１−＋２１はローパワー
放送の受イｄ状態とされる。一方、ハイパワー放送（１
２，２へ□　１２．７Ｇｌｌｚ　）を受信するとき、同
様に屋外ユニット（２）の端子（１２）にイハ給される
電圧子Ｂは、例えば＋１５■とされ、レベル検出回路（
１５）の制御により局部発振器（りＩ＋）に動作電圧が
供給され、ミキサ（８）には１１．２ＣＩＩＺの周波数
信号が供給され、１ｍ４外ユニツト（２）はハイパワー
放送の受信状態とされる。従って、本例においてはロー
パワー放送及びハイパワー放送の双方とも受信すること
ができる。This example is configured in this way and is used for low power broadcasting (11, 7
~12.2i;llz), from the indoor unit 1-+41 via the coaxial cable (3)
The voltage element B supplied to the terminal (12) of the unit (2) is, for example, +10■, and the operating voltage is supplied to the local oscillator (9L) under the control of the level detection circuit IM (15).
Miki! The frequency signal of IO, 705GIlz is fed to I' (81), and the outdoor unit 71-+21 is placed in the low power broadcast receiving state. On the other hand, the high power broadcast (1
When receiving 2, 2 (12.7
15), an operating voltage is supplied to the local oscillator (RII+), a frequency signal of 11.2 CIIZ is supplied to the mixer (8), and the 1m4 external unit (2) is placed in the receiving state for high power broadcasting. . Therefore, in this example, both low power broadcasting and high power broadcasting can be received.

ｊすする本例によれば、屋外ユニット（２）と屋内ユニ
ット（４）間のケーブルは、従来同様に最小限必要な１
本（３）だりであり、ケーブルを増加させることなく屋
外ユニット（２）における局部発振周波数の受信帯域を
切換えることができる。従って、ケーブルの増加に伴う
信号伝送上、気密子の不都合は生じ得ない。According to this example, the cable between the outdoor unit (2) and the indoor unit (4) is the same as the conventional one.
This is the case (3), and the reception band of the local oscillation frequency in the outdoor unit (2) can be switched without increasing the number of cables. Therefore, there will be no problem with the airtight shield in signal transmission due to the increase in the number of cables.

面、上述実施例においては屋外ユニット（２）における
局部発振周波数を切換えるのに局部（ａ　振器（９Ｌ）
及び（９１１）を切換えるものであるが、局部光１辰器
は１個だけとしその発振周波数を受信化域に応じて切換
えるようにしてもよい。In the above embodiment, the local oscillator (9L) is used to switch the local oscillation frequency in the outdoor unit (2).
and (911), however, it is also possible to use only one local optical unit and to switch its oscillation frequency according to the reception area.

発明の効果 以上述べた実施例から−も明らかなように、本発明によ
れば屋外ユニットと屋内ユニット間のケーブルを増加さ
せずに屋外ユニットにおける局部発振周波数を受信帯域
に応じて切換えることができる。従って、ケーブルの増
加に伴う信号伝送」−１気密」−の不都合は生じ得ない
。Effects of the Invention As is clear from the embodiments described above, according to the present invention, the local oscillation frequency in the outdoor unit can be switched according to the reception band without increasing the number of cables between the outdoor unit and the indoor unit. . Therefore, the problem of signal transmission ``1 airtightness'' due to an increase in the number of cables cannot occur.

【図面の簡単な説明】[Brief explanation of drawings]

第１図はＳ　ＨＦ受信機の構成図、第２図は本発明の一
実施例を示す構成図、第３図はその説明に供する波形図
である。 （１１はアンテナ、（２）は屋外ユニット、（３）は同
軸ケーブル、（４）は屋内ユニット、（８）はミキ・す
・、（９１、）及び（９１１）は夫々局部発振器、（１
３）及び（２８）は夫々レギュレータ、（１４）はスイ
ッチ回路、（１５）はレベル検出回路である。FIG. 1 is a block diagram of an SHF receiver, FIG. 2 is a block diagram showing an embodiment of the present invention, and FIG. 3 is a waveform diagram for explaining the same. (11 is the antenna, (2) is the outdoor unit, (3) is the coaxial cable, (4) is the indoor unit, (8) is the MIKI SU・, (91, ) and (911) are the local oscillators, (1
3) and (28) are regulators, (14) is a switch circuit, and (15) is a level detection circuit.

Claims (1)

【特許請求の範囲】[Claims] Ｓ　ＨＦ帯の電波をＵＨＦ帯に周波数変換する屋外ユニ
ットと、屋内ユニットとを有し、上記屋外ユニットより
−に記１ｉ内ユニットにト記ｔＪ　ＨＦ帯に変換された
信号が単一の同軸ケーブルを通じ゛ζ供給されると共に
上記屋内ユニットより十記屋外ユニットに上記同軸ケー
ブルを通じ”ζ動作電圧が供給され、上記屋内ユニット
より上記屋外ユニットに供給される電圧が受信帯域に応
じ゛ζ切換えられると共に上記屋外ユニットでこの電圧
変化が検出され、その検出出力で上記受信帯域に応じた
周波数の局部発振信号を発生ずるにうに切換えられるこ
とを特徴とするＳ　ＨＦ受信機。S It has an outdoor unit that converts the frequency of radio waves in the HF band to the UHF band, and an indoor unit, and the signal converted to the HF band from the outdoor unit to the unit in the item 1i is transmitted via a single coaxial cable. At the same time, the indoor unit supplies the ten outdoor units with the working voltage through the coaxial cable, and the voltage supplied from the indoor unit to the outdoor unit is switched according to the receiving band. The SHF receiver is characterized in that this voltage change is detected by the outdoor unit, and the detection output is used to generate a local oscillation signal of a frequency corresponding to the reception band.
JP59005391A 1984-01-13 1984-01-13 Shf receiver Pending JPS60149227A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP59005391A JPS60149227A (en) 1984-01-13 1984-01-13 Shf receiver
KR1019840008609A KR920006133B1 (en) 1984-01-13 1984-12-31 Super high frequency receiver
CA000471289A CA1224529A (en) 1984-01-13 1985-01-02 Shf receiver
US06/688,544 US4592093A (en) 1984-01-13 1985-01-03 Super high frequency receiver
AU37538/85A AU585205B2 (en) 1984-01-13 1985-01-09 Shf receiver
EP85300176A EP0149533B2 (en) 1984-01-13 1985-01-10 Apparatus for receiving super high frequency signals
DE8585300176T DE3579468D1 (en) 1984-01-13 1985-01-10 DEVICE FOR RECEIVING SUPER HIGH FREQUENCY SIGNALS.
HK73694A HK73694A (en) 1984-01-13 1994-07-28 Apparatus for receiving super high frequency signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59005391A JPS60149227A (en) 1984-01-13 1984-01-13 Shf receiver

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP22576594A Division JPH0786979A (en) 1994-08-26 1994-08-26 Shf receiver

Publications (1)

Publication Number Publication Date
JPS60149227A true JPS60149227A (en) 1985-08-06

Family

ID=11609858

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59005391A Pending JPS60149227A (en) 1984-01-13 1984-01-13 Shf receiver

Country Status (8)

Country Link
US (1) US4592093A (en)
EP (1) EP0149533B2 (en)
JP (1) JPS60149227A (en)
KR (1) KR920006133B1 (en)
AU (1) AU585205B2 (en)
CA (1) CA1224529A (en)
DE (1) DE3579468D1 (en)
HK (1) HK73694A (en)

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Also Published As

Publication number Publication date
DE3579468D1 (en) 1990-10-11
HK73694A (en) 1994-08-05
US4592093A (en) 1986-05-27
KR850005921A (en) 1985-09-26
AU585205B2 (en) 1989-06-15
KR920006133B1 (en) 1992-07-31
AU3753885A (en) 1985-07-18
EP0149533A2 (en) 1985-07-24
EP0149533B1 (en) 1990-09-05
CA1224529A (en) 1987-07-21
EP0149533A3 (en) 1987-07-15
EP0149533B2 (en) 1999-12-15

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